Making and Knowing
A minimal edition of BnF Ms Fr 640 in English Translation

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Molding

at top margin of folio 050r

If you want to quickly mold in demi—relief anything you come upon, fold some paper five or six times over, and place it on the medal and make sure the paper is folded around the edges of the medal so it is very secure. Next take a stick, broad at one end and with a well—dulled point at the other, and rub firmly on the paper, and retrace the lines with the point of the stick until you reckon that your impression is well done. Then, at your convenience, rub oil onto the paper lightly with a brush, and cast some tallow or wax or sulphur into it. And the paper, without burning, will give you a neat design that you can then mold in plaster or tripoli and then in lead and other metals.